From a72c398b5af558d231decbbf12c7990dbd38c682 Mon Sep 17 00:00:00 2001

From: David Herrmann <dh.herrmann@gmail.com>

Date: Thu, 10 Oct 2013 13:09:37 +0200

Subject: [PATCH] login: fix invalid free() in sd_session_get_vt()

We need to clear variables markes as _cleanup_free_. Otherwise, our

error-paths might corrupt random memory.

---

 src/login/sd-login.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/login/sd-login.c b/src/login/sd-login.c

index 71d8c29..6c27dfe 100644

--- a/src/login/sd-login.c

+++ b/src/login/sd-login.c

@@ -350,7 +350,7 @@ _public_ int sd_session_get_tty(const char *session, char **tty) {

 }

 _public_ int sd_session_get_vt(const char *session, unsigned *vtnr) {

-        _cleanup_free_ char *vtnr_string;

+        _cleanup_free_ char *vtnr_string = NULL;

         unsigned u;

         int r;